Gae ventilation



No Model.) 2 Sheets-Sheet 1.

A. BELL.

GAR VENTILATION. No. 325,040. Patented Aug. 25, 1885.

ERS. Phowuxhogmpher. washinmnn. D. C.

(No Model.) 2 Sheets-Sheet 2.

A. BELL.

CAR VENTILATION.

No. 325,040. Patented Aug. 25, 1885.

. wwe/v1 bof #7a @ya llNiTEii STATES PATENT OEEi'cEG ALONZO BELL, OF XVASHINGTON, DISTRICT OF COLUMBIA.

CAR-VENTILATION.

SPECIFICATION forming part of Letters Patent No.325,040, dated August 25,1885.

Application filed October l0, lSS-l.

To @ZZ whom it may concer/1.:

Be it known that I, ALoNzo BELL, a citizen of the United States, residing at lVashington, District ofColumbia, have invented a new and useful Improvement in Gar -Ventilatoi-S, of which the following is a specification.

rIhe object of my invention is to provide a simple and effective device for facilitating the ventilation and cleansing of a railwaycar through au outlet-passage in the bottoni thereof. I attain this object by arranging beneath the floor of a car an exhaust-casing or outletpassage, communicating with the interior of the car through a register or registers in said casing, and communicating with the outer air below the car-Hoor through the open bottom of a double cowl longitudinally placed at the base of said casing. The forward end relatively to the movement of the ear deflects the air, which enters it downward and obliquely across the open bottom of the double cowl, creating a downward draft in the casing or outlet-passage, through which the unobstructed discharge of air and refuse dirt may take place from the body of the car.

Figure l represents a perspective view of my device, showing double cowl, the casing forming central passage therein, and register placed over said passage. Fig. 2 represents a longitudinal vertical section of the device drawn on line x a: of Fig. 1. Fig. 3 represents a perspective elevation of a section of the interior of a car, showing horizontal and vertical extension of the casing or outlet-passage and the floor and side registers placed therein.

Like letters indicate like parts.

A A are the cowls, having detlecting-plates d d d d. B is the exhaust-casing or outlet passage, open at the bottom and communicating with the interior of the car through either of the registers C E F, and with the outer air between the throats a a of the two cowls.

It will be seen that these cowls as arranged form a double cowl with an open bottom, the casing B acting as a central passage through which air and dirt may be discharged below the line of the car-iloor.

The broken lines Z Z in Fig. l indicate the upper and lower surfaces of the car-iloor.

1n Fig. 3 the exhaust-casing B or outletpassage is shown by dotted lines extended horizontally and vertically for the ventilation (No model.)

of the upper and lower portions of the car through registers C, E, and F.

By opening the upper register and closing l[he lower ones the hot air is drawn from the upper part of the car, while by closing the upper register and opening either of the lower onesv the lower portion is ventilated. The impure air found along the line of the floor, as well as the refuse dirt arising from sweepings or other causes, is best discharged by opening the register in the floor and closing those in the side.

It will be seen that the saine effect is produced whether the car is moving forward or backward, as the air rushes in the cowl presented to the wind, and is deflected downward at the base of the outletpassage, causing therein a positive downward draft. In cars already provided with upper ventilators the easing vertically extended on the side and the registers therein may be dispensed with.

It is essential to the perfect operation of my device that the air-currents moving downward through the outlet-passage B and those de- Iiected through either of the cowls A A should encounter nothing tending to obstruct their free flow into the open air below the open bottom of the double cowl and the central outletpassage therein.

It will be seen that the open bottom of my device permits the free flow downward of the currents passing through both the casing B and the cowl A, thus effectually preventing the accumulation of dirt or refuse at the base of the outlet-passage, or the formation of ice at that point due to driving snow in severe weather.

The cowls A A may be connected with the exhaust-casing in any way best calculated to secure the full force of the deflected currents either by a direct attachment to the casing' itself, or by means of an independent boxinfb" connected therewith. D

I am aware that the ventilation of a car by means of outward.currents created by cowls arranged on the side or top of a car or at the base of a closet-hopper is not new.

XVhat I claim as new and of my invention 1sl. The car-ventilator herein described, con sisting ofthe double cowl A A, open at the bottom and having central passage,.B, arranged IOO interior of the car, a Hoor-register, and a. side register or registers opening into said casing,

as shown and described, whereby air and dirt may be discharged from the lower portion, and r 5 the hot air removed from the upper portion of the car', substantially as set forth.

ALONZO BELL.

Vitnesscs:

A. J. WILLARD, l SAM. M. LAKE. 

